What does the Support Force Graph show?

It is a common misconception that the pile/support force diagrams are soil/pile interaction forces. Slide does not give soil/pile interaction forces, and RS2 is required in order to do that. The hatched figure is simply the pile force diagram drawn on the side of the pile.

Soil Nail Force Diagrams

For an overview of how the pile/support force diagrams are determined, see the Overview of Support Implementation help topic.